The corresponding results for the \(\pi ^\pm \)  cross sections are shown in Figs. REF 
and REF  and compared to the SLAC [1]} and Jefferson lab Hall A data [2]}.
For positive values of \(\cos {\theta }\)  theory and experiment are close to each other but near 90
degrees and in the backward hemisphere our results are well below the data [1]}, [2]}
(by a factor of 2 to 3). In contrast to \(\pi ^0\)  photoproduction the twist-2 contribution to the
\(\pi ^\pm \)  cross section is substantial in the forward hemisphere, see Figs. REF  and
REF . This can be understood from properties of the subprocess amplitude (REF ):
\(\frac{{\cal H}^{\pi ^\pm }}{{\cal H}^{\pi ^0}} \sim \frac{e_a \hat{u}+e_b\hat{s}}{\hat{s}+\hat{u}}\) 
